title: An early return to vigorous activity may destabilize anterior cruciate ligaments reconstructed with hamstring grafts.
mesh_terms: D000293:Adolescent; D000328:Adult; D016118:Anterior Cruciate Ligament / Q000601:surgery*; D000070598:Anterior Cruciate Ligament Injuries; D001265:Athletic Injuries / Q000601:surgery*; D005260:Female; D006801:Humans; D007593:Joint Instability / Q000503:physiopathology*; D007719:Knee Joint / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D012044:Regression Analysis; D012189:Retrospective Studies; D013177:Sports / Q000502:physiology*; D011795:Surveys and Questionnaires; D013710:Tendons / Q000637:transplantation*; D013997:Time Factors